Studying on the protective effectiveness of wood treated with nanomaterials TiO 2, ZnO, CuO, SiO2 , nanoclay against wood destroying basidiomycetes and termites
Keywords:
Wood preservation, Coptotermes gestroi, Pleurotus ostreatus,, nanomaterials.Abstract
Nanomaterials TiO2, ZnO, CuO, SiO2, Nanoclay were dispersed in water
solvent and PF for researching wood protective effectiveness. Styrax
tonkinensis wood treated with nanomaterials was tested for determining the
protective effectiveness of wood preservatives against wood destroying
basidiomycetes and termites. Against the rotting fungi Pleurotus ostreatus,
high effectiveness was observed in specimens treated with TiO2 suspensions 0.4% and CuO suspensions (0.1 - 0.2%) by vacuum-pressure method at 0.7Mpa in 60 minutes. Specimens treated with suspensions of other nano material demonstrated average and low effectiveness. High effectiveness was observed in specimens treated with PF 25% with or without nano material by vacuum-pressure method at 0.7Mpa in 120 minutes. Against the termite Coptotermes gestroi, Styrax tonkinensis wood trated with TiO2 suspensions (0.2%), CuO suspensions (0.1 - 0.2%) and ZnO suspensions (0.3 and 0.4%) demonstrated good resistance, while suspensions of the same agents at other concentration illustrated average effectiveness. Low effectiveness was observed at specimens treated with nano clay and nano SiO2. Wood specimens of Styrax tonkinensis treated with nano materials illustrated good effectiveness, while other specimens treated with PF 25%, without nano material illustrated avareage effectiveness.
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